基于凹面阶梯光栅提升光通信质量的研究进展  

Research Progress in Enhancing Optical Communication Quality Using Concave Echelle Grating as Demultiplexer

作　　者：付翔 邹林 何天浚 乐文冉 汪亚 王诗崎 陈航 占生宝 Fu Xiang;Zou Lin;He Tianjun;Yue Wenran;Wang Ya;Wang Shiqi;Chen Hang;Zhan Shengbao(College of Physics and Electrical Engineering,Anqing Normal University,Anqing 246133,Anhui,China;School of Mechanical and Electrical Engineering,Chuzhou University,Chuzhou 239000,Anhui,China)

机构地区：[1]安庆师范大学电子工程与智能制造学院,安徽安庆246133 [2]滁州学院机械与电气工程学院,安徽滁州239000

出　　处：《激光与光电子学进展》2024年第23期48-57,共10页Laser & Optoelectronics Progress

基　　金：安徽省高校拔尖人才项目(gxbjZD2021063)。

摘　　要：为满足波分复用(WDM)光通信系统对中、高质量信号传输的解复用要求,从凹面阶梯光栅(CEG)解复用器的消除串扰和改善波长漂移两方面入手,将消除串扰设计归纳为罗兰圆型、非罗兰圆型以及多个光栅级联三种结构,而将改善波长漂移的方法总结为抑制偏振、平坦光谱两种类型。在介绍凹面光栅解复用原理的基础上,综述了消除串扰、改善波长漂移的研究进展,分析了各个消除串扰、改善波长漂移方案所具有的优势,指出了消除串扰、改善波长漂移需要满足的条件,并展望了解复用器未来可能的发展方向。To meet the requirements of demultiplexing in wavelength division multiplexing(WDM)systems for mediumand high-quality signal transmission,this study investigates two aspects:the elimination of crosstalk and the improvement in the wavelength drift of concave echelle grating(CEG)demultiplexing devices.The design used to eliminate crosstalk is summarized into three structures:Roland circle,non-Roland circle,and multiple grating cascade are presented and analyzed.To improve the wavelength shift,two methods—compensating polarization and flattening passband,are evaluated.Further,in introducing the demultiplexing principles,we review the research progress on crosstalk elimination and wavelength shift improvements and analyze the advantages for the proposed methods of eliminating crosstalk and improving wavelength shift.Additionally,the conditions for eliminating crosstalk and wavelength shift improvements are identified,and the potential future development directions of demultiplexers are discussed.

关 键 词：波分复用技术 解复用器 凹面阶梯光栅 串扰 波长漂移 集成光学器件 

分 类 号：TH744[机械工程—光学工程]